I have published v0.3.0. - Changed the enemy spawning system in battle levels to have pre-set enemies spawn instead of random ones. - Added two new enemies: Flying Saber and Flying Missile. - Adjusted the number of guns in Battle 3 to make it more enjoyable for all players in multiplayer mode. - Adjusted the number of jets in Battle 4 to make it more enjoyable for all players in multiplayer mode. - Added a prologue, which can be selected from the title menu. - Applied post-effects, including bloom and motion blur. - Fixed several issues: 　- Fixed a bug where the Saber (white pole) did not take damage when hitting the player. 　- Fixed an issue where the chalkboard in the tutorial was covered by the player's hand. 　- Added explanation text to the tutorial to clarify its intent. - Fixed issues with the multiplayer mode: 　- Fixed a bug where some effects (such as explosions and sound) did not appear for local players. - Improved game screen display: 　- Added a display for the final wave number, allowing players to know how many waves remain.